Reprint of : Floquet Majorana fermions in superconducting quantum dots

•We search for Majorana fermions in superconducting quantum dot arrays.•Periodically variation of single-electron energies induces Floquet Majorana fermions.•Floquet engineering allows us to tune their existence, localization and properties.

We consider different configurations of ac driven quantum dots coupled to superconductor leads where Majorana fermions can exist as collective quasiparticles. The main goal is to tune the existence, localization and properties of these zero energy quasiparticles by means of periodically driven external gates. In particular, we analyze the relevance of the system and driving symmetry. We predict the existence of different sweet spots with Floquet Majorana fermions in configurations where they are not present in the undriven system.